JGrinder is a framework for mapping Objects in Java to various persistent stores. These include relational databases, in memory 'storage', and flat files. The architecture allows additional persistent stores to be supported (such as storing objects over a
PriDE is an ultra-thin and high-performance Java O/R mapper for relational databases, originally developed by MATHEMA Software GmbH. It doesn't follow any persistence management standards but relies on common design patterns and is production-proved in bo
Cayenne is a powerful, full-featured Java Object Relational Mapping framework. It is open source and completely free. Cayenne cross-platform modeling GUI tools place it in the league of its own, making it a very attractive choice over both closed source c